import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'
// 引入其他的模块化路由对象（路由的定义）
import approval from './modules/approval'
import attendance from './modules/attendance'
import department from './modules/department'
import employee from './modules/employee'
import permission from './modules/permission'
import role from './modules/role'
import salary from './modules/salary'
import social from './modules/social'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */

// 在这里，需要把路由分成两大类
// 1. 静态路由 ==> 任何人都可以访问的路由
// 2. 动态路由 ==> 根据用户的角色不同（权限不同）控制哪些路由页面可访问，哪些不可以访问
// 如何控制路由页面不可以访问？？ ==> 不要注册
// 如何控制路由页面可访问？？ ==> 本质上是路由是否被注册了，只要是注册了，那么就能被访问到

// 结论：
// 静态路由一定会被注册
// 动态路由根据用户是否拥有权限，选择是否被注册

// 动态路由
export const asyncRoutes = [
  approval,
  attendance,
  department,
  employee,
  permission,
  role,
  salary,
  social
]

// 静态路由
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    // 这个属性表示不会被渲染到左侧sidebar上
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    // 重定向
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '首页', icon: 'dashboard' }
    }]
  }

  // 兜底路由，如果找不到，就被匹配到这个路由上：404页面
  // 404 page must be placed at the end !!!
  // { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
  mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
